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<head><meta charset="utf-8"><title>weekly meeting 2018-09-27 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html">weekly meeting 2018-09-27</a></h3>

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<a name="134744613"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134744613" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134744613">(Sep 27 2018 at 13:35)</a>:</h4>
<p>just a heads up to <span class="user-group-mention" data-user-group-id="492">@T-compiler</span> : our weekly meeting will be starting here in about 25 minutes</p>



<a name="134746278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746278">(Sep 27 2018 at 14:00)</a>:</h4>
<p>o/</p>



<a name="134746335"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746335" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746335">(Sep 27 2018 at 14:01)</a>:</h4>
<p>Hey :)</p>



<a name="134746342"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746342" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746342">(Sep 27 2018 at 14:01)</a>:</h4>
<p>o/</p>



<a name="134746389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746389">(Sep 27 2018 at 14:02)</a>:</h4>
<p>(I was just waiting until I see a "reasonable" number of emoji responses and/or comments)</p>



<a name="134746397"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746397" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746397">(Sep 27 2018 at 14:02)</a>:</h4>
<p>((or for a five minute <code>await</code> timeout))</p>



<a name="134746428"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746428" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746428">(Sep 27 2018 at 14:03)</a>:</h4>
<p>Lets see, as usual we have our agenda on <a href="https://public.etherpad-mozilla.org/p/rust-compiler-meeting" target="_blank" title="https://public.etherpad-mozilla.org/p/rust-compiler-meeting">https://public.etherpad-mozilla.org/p/rust-compiler-meeting</a></p>



<a name="134746434"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746434" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746434">(Sep 27 2018 at 14:03)</a>:</h4>
<p>(Maybe after we settle on our chat platform we'll work next on migrating away from that EOL service)</p>



<a name="134746441"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746441" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746441">(Sep 27 2018 at 14:03)</a>:</h4>
<p>First up, the <a href="http://is.gd/0ohWmp" target="_blank" title="http://is.gd/0ohWmp">P-high issues</a></p>



<a name="134746443"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746443" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746443">(Sep 27 2018 at 14:03)</a>:</h4>
<p>RIP etherpad</p>



<a name="134746499"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746499" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746499">(Sep 27 2018 at 14:04)</a>:</h4>
<p>lets work bottom up today</p>



<a name="134746503"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746503" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746503">(Sep 27 2018 at 14:04)</a>:</h4>
<p>first we have "Tracking issue for RFC 554: <code>pattern_parentheses</code> feature" <a href="https://github.com/rust-lang/rust/issues/51087" target="_blank" title="https://github.com/rust-lang/rust/issues/51087">#51087</a></p>



<a name="134746507"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746507" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746507">(Sep 27 2018 at 14:04)</a>:</h4>
<p>we have a pending PR</p>



<a name="134746516"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746516" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746516">(Sep 27 2018 at 14:04)</a>:</h4>
<p>er, a landed PR</p>



<a name="134746520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746520">(Sep 27 2018 at 14:04)</a>:</h4>
<p>I guess we can close the issue</p>



<a name="134746532"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746532" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746532">(Sep 27 2018 at 14:04)</a>:</h4>
<p>okay I'll let <span class="user-mention" data-user-id="116009">@nikomatsakis</span> do that</p>



<a name="134746560"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746560" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746560">(Sep 27 2018 at 14:05)</a>:</h4>
<p>next up: "infinite recursion ICE" <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a></p>



<a name="134746572"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746572" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746572">(Sep 27 2018 at 14:05)</a>:</h4>
<p>so this appears to have been fixed</p>



<a name="134746578"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746578" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746578">(Sep 27 2018 at 14:05)</a>:</h4>
<p>yes</p>



<a name="134746584"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746584" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746584">(Sep 27 2018 at 14:05)</a>:</h4>
<p>we can close this issue too, I think...</p>



<a name="134746585"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746585" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746585">(Sep 27 2018 at 14:05)</a>:</h4>
<p>bisection indicates that it was fixed between August 18 and August 25th</p>



<a name="134746626"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746626" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746626">(Sep 27 2018 at 14:06)</a>:</h4>
<p>er, wait, sorry, I was confused</p>



<a name="134746643"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746643" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746643">(Sep 27 2018 at 14:06)</a>:</h4>
<p>I have nominated the likely PR that has the fix for backport</p>



<a name="134746658"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746658" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746658">(Sep 27 2018 at 14:06)</a>:</h4>
<p>so we'll discuss that when we get to beta nominations</p>



<a name="134746675"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746675" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746675">(Sep 27 2018 at 14:07)</a>:</h4>
<p>I'm leaving the issue (<a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a>) open because its tagged as a regression</p>



<a name="134746708"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746708" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746708">(Sep 27 2018 at 14:07)</a>:</h4>
<p>(I think our policy is to leave those open, even if fixed in nightly, until we've resolved backport Q's)</p>



<a name="134746722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746722">(Sep 27 2018 at 14:07)</a>:</h4>
<p>In any case I'll assign this to myself and take it off <span class="user-mention" data-user-id="116009">@nikomatsakis</span> 's plate</p>



<a name="134746775"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746775" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746775">(Sep 27 2018 at 14:08)</a>:</h4>
<p>next up: "std-using paths work just fine in 2018 edition #![no_std]" <a href="https://github.com/rust-lang/rust/issues/53166" target="_blank" title="https://github.com/rust-lang/rust/issues/53166">#53166</a></p>



<a name="134746791"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746791" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746791">(Sep 27 2018 at 14:09)</a>:</h4>
<p>I know <span class="user-mention" data-user-id="119009">@eddyb</span> landed some stuff related to this, ...</p>



<a name="134746811"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746811" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746811">(Sep 27 2018 at 14:09)</a>:</h4>
<p>yeah, only the lint is missing now</p>



<a name="134746818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746818">(Sep 27 2018 at 14:09)</a>:</h4>
<p>but if I understand correctly the issue itself is not yet resolved. Okay</p>



<a name="134746880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746880">(Sep 27 2018 at 14:10)</a>:</h4>
<p>does someone want to take responsibilty for that? (i.e. get the assignment?)</p>



<a name="134746900"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746900" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746900">(Sep 27 2018 at 14:10)</a>:</h4>
<p>I'm willing to take it if I don't see any volunteers</p>



<a name="134746909"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746909" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746909">(Sep 27 2018 at 14:11)</a>:</h4>
<p>(but you all might regret putting me in charge of a lint...)</p>



<a name="134746926"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746926" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746926">(Sep 27 2018 at 14:11)</a>:</h4>
<p>is the lint considered high priority?</p>



<a name="134746931"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746931" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746931">(Sep 27 2018 at 14:11)</a>:</h4>
<p>well I guess it would be</p>



<a name="134746941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746941">(Sep 27 2018 at 14:11)</a>:</h4>
<p>it feels like it overlaps with other "accidentally non-portable" cases</p>



<a name="134746944"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746944" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746944">(Sep 27 2018 at 14:11)</a>:</h4>
<p>I guess if its deny-by-default in <code>#[no_std]</code> cases then its important to get it in?</p>



<a name="134746945"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746945" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746945">(Sep 27 2018 at 14:11)</a>:</h4>
<p>but anyway</p>



<a name="134746956"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134746956" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134746956">(Sep 27 2018 at 14:12)</a>:</h4>
<blockquote>
<p>I guess if its deny-by-default in <code>#[no_std]</code> cases then its important to get it in?</p>
</blockquote>
<p>makes sense</p>



<a name="134747009"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747009" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747009">(Sep 27 2018 at 14:12)</a>:</h4>
<p>next up: "await as a keyword and <code>await!</code> macro" <a href="https://github.com/rust-lang/rust/issues/53834" target="_blank" title="https://github.com/rust-lang/rust/issues/53834">#53834</a></p>



<a name="134747026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747026">(Sep 27 2018 at 14:13)</a>:</h4>
<p>I think this is fixed</p>



<a name="134747029"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747029" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747029">(Sep 27 2018 at 14:13)</a>:</h4>
<p>I see that PR <a href="https://github.com/rust-lang/rust/issues/54411" target="_blank" title="https://github.com/rust-lang/rust/issues/54411">#54411</a> landed ...</p>



<a name="134747032"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747032" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747032">(Sep 27 2018 at 14:13)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> landed a PR</p>



<a name="134747043"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747043" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747043">(Sep 27 2018 at 14:13)</a>:</h4>
<p>I'm not sure why they didn't mark it as "Fixes"...</p>



<a name="134747070"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747070" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747070">(Sep 27 2018 at 14:13)</a>:</h4>
<blockquote>
<p>I'm not sure why they didn't mark it as "Fixes"...</p>
</blockquote>
<p>Forgot, probably <span class="emoji emoji-1f642" title="slight smile">:slight_smile:</span></p>



<a name="134747075"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747075" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747075">(Sep 27 2018 at 14:13)</a>:</h4>
<p>okay I'll close</p>



<a name="134747149"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747149" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747149">(Sep 27 2018 at 14:14)</a>:</h4>
<p>next up: "Regression in #[allow(deprecated)] for <code>impl Trait</code> return type" <a href="https://github.com/rust-lang/rust/issues/54045" target="_blank" title="https://github.com/rust-lang/rust/issues/54045">#54045</a></p>



<a name="134747211"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747211" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747211">(Sep 27 2018 at 14:15)</a>:</h4>
<p>Okay so I think there's no change in status here, apart from the removal of stable-nominated by <span class="user-mention" data-user-id="116122">@simulacrum</span></p>



<a name="134747256"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747256" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747256">(Sep 27 2018 at 14:15)</a>:</h4>
<p>(left a note saying such)</p>



<a name="134747296"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747296" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747296">(Sep 27 2018 at 14:16)</a>:</h4>
<p>next up: "Implement some way to run UI tests ignoring run-pass tests" <a href="https://github.com/rust-lang/rust/issues/54047" target="_blank" title="https://github.com/rust-lang/rust/issues/54047">#54047</a></p>



<a name="134747319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747319">(Sep 27 2018 at 14:16)</a>:</h4>
<p>I'm almost done with this, in terms of the short term plan; there's a new PR that does the <code>ui/run-pass</code> --&gt; <code>run-pass</code> migration</p>



<a name="134747337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747337">(Sep 27 2018 at 14:17)</a>:</h4>
<p>for the long term plan, I've been thinking that maybe once the edition is out, I might embark on a project to revise <code>compiletest</code> and <code>src/test/</code> more wholistically.</p>



<a name="134747343"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747343" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747343">(Sep 27 2018 at 14:17)</a>:</h4>
<p>but we don't need to discuss that now.</p>



<a name="134747350"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747350" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747350">(Sep 27 2018 at 14:17)</a>:</h4>
<blockquote>
<p>for the long term plan, I've been thinking that maybe once the edition is out, I might embark on a project to revise compiletest and src/test/ more wholistically.</p>
</blockquote>
<p>jfyi <span class="user-mention" data-user-id="116013">@qmx</span> had also expressed some interest in this</p>



<a name="134747359"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747359" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747359">(Sep 27 2018 at 14:17)</a>:</h4>
<p>I am definitely in favor</p>



<a name="134747362"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747362" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747362">(Sep 27 2018 at 14:17)</a>:</h4>
<blockquote>
<p>jfyi <span class="user-mention" data-user-id="116013">@qmx</span> had also expressed some interest in this</p>
</blockquote>
<p>good to know</p>



<a name="134747365"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747365" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747365">(Sep 27 2018 at 14:17)</a>:</h4>
<p>(my main point being: it might be something that merits a small WG)</p>



<a name="134747369"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747369" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> qmx <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747369">(Sep 27 2018 at 14:18)</a>:</h4>
<p>yea, I've been trying to do piecemeal improvements there</p>



<a name="134747408"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747408" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747408">(Sep 27 2018 at 14:18)</a>:</h4>
<p>Yes a dedicated WG would be awesome here.</p>



<a name="134747442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747442">(Sep 27 2018 at 14:18)</a>:</h4>
<p>next up: "Trait with HRTB blanket impl is implemented when it shouldn't be" <a href="https://github.com/rust-lang/rust/issues/54302" target="_blank" title="https://github.com/rust-lang/rust/issues/54302">#54302</a></p>



<a name="134747459"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747459" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747459">(Sep 27 2018 at 14:19)</a>:</h4>
<p>has a pending fix in <a href="https://github.com/rust-lang/rust/pull/54401" target="_blank" title="https://github.com/rust-lang/rust/pull/54401">https://github.com/rust-lang/rust/pull/54401</a></p>



<a name="134747470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747470">(Sep 27 2018 at 14:19)</a>:</h4>
<p><span class="user-mention" data-user-id="126804">@Ariel Ben-Yehuda</span> was concerned about perf, but the perf run suggests there's no real hit</p>



<a name="134747483"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747483" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747483">(Sep 27 2018 at 14:19)</a>:</h4>
<p>okay</p>



<a name="134747490"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747490" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747490">(Sep 27 2018 at 14:19)</a>:</h4>
<p>they were also concerned whether this was the best fix; I'd personally like to land it and address more holistically as part of work on revamping trait system</p>



<a name="134747494"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747494" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747494">(Sep 27 2018 at 14:19)</a>:</h4>
<p>(work which I expect to be starting Any Day Now)</p>



<a name="134747587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747587">(Sep 27 2018 at 14:21)</a>:</h4>
<p>next up: "Compiler panic using 'static_assertions'" <a href="https://github.com/rust-lang/rust/issues/54327" target="_blank" title="https://github.com/rust-lang/rust/issues/54327">#54327</a></p>



<a name="134747668"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747668" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747668">(Sep 27 2018 at 14:22)</a>:</h4>
<p>sounds like it's not really a <em>regression</em></p>



<a name="134747694"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747694" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747694">(Sep 27 2018 at 14:22)</a>:</h4>
<p>but I'm not sure what <span class="user-mention" data-user-id="119009">@eddyb</span> meant by "this ICE is correct" exactly</p>



<a name="134747701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747701">(Sep 27 2018 at 14:23)</a>:</h4>
<p>So I want to understand the claims here</p>



<a name="134747712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747712">(Sep 27 2018 at 14:23)</a>:</h4>
<p>we used to get an error, due to a use of <code>size_of</code> in a const-expr context... is that right?</p>



<a name="134747749"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747749" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747749">(Sep 27 2018 at 14:23)</a>:</h4>
<p>and now, since <code>size_of</code> is now a <code>const fn</code>, the code which previously errored for one reason is now ICE'ing for an entirely different reason...</p>



<a name="134747750"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747750" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747750">(Sep 27 2018 at 14:23)</a>:</h4>
<p>do I have all that right?</p>



<a name="134747819"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747819" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747819">(Sep 27 2018 at 14:24)</a>:</h4>
<p>that is what I understood</p>



<a name="134747840"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747840" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747840">(Sep 27 2018 at 14:24)</a>:</h4>
<p>but it seems like we should die a controlled death</p>



<a name="134747842"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747842" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747842">(Sep 27 2018 at 14:24)</a>:</h4>
<p>if we're going to die?</p>



<a name="134747849"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747849" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747849">(Sep 27 2018 at 14:24)</a>:</h4>
<p>the ICE is <a href="https://github.com/rust-lang/rust/issues/43408" target="_blank" title="https://github.com/rust-lang/rust/issues/43408">https://github.com/rust-lang/rust/issues/43408</a></p>



<a name="134747853"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747853" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747853">(Sep 27 2018 at 14:24)</a>:</h4>
<p>And finally, the point that <span class="user-mention" data-user-id="119009">@eddyb</span> is making is that: If we do <em>not</em> have an example of a program that compiled successfully under version A and then ICE's under version B, then we should not be tagging as a regression?</p>



<a name="134747859"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747859" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747859">(Sep 27 2018 at 14:25)</a>:</h4>
<p>so it is tracked elsewhere</p>



<a name="134747882"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747882" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747882">(Sep 27 2018 at 14:25)</a>:</h4>
<p>I think we all agree this is a <em>bug</em></p>



<a name="134747887"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747887" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747887">(Sep 27 2018 at 14:25)</a>:</h4>
<p>just a question of whether to classify it as a regression, per se</p>



<a name="134747891"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747891" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747891">(Sep 27 2018 at 14:25)</a>:</h4>
<blockquote>
<p>And finally, the point that <span class="user-mention" data-user-id="119009">@eddyb</span> is making is that: If we do <em>not</em> have an example of a program that compiled successfully under version A and then ICE's under version B, then we should not be tagging as a regression?</p>
</blockquote>
<p>Right that’s "just" an I-ICE</p>



<a name="134747913"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747913" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747913">(Sep 27 2018 at 14:25)</a>:</h4>
<p>my gut tells me that this reasoning is sound</p>



<a name="134747917"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747917" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747917">(Sep 27 2018 at 14:25)</a>:</h4>
<p>does this even need its own issue?</p>



<a name="134747972"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747972" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747972">(Sep 27 2018 at 14:26)</a>:</h4>
<p>errors becoming an ICE seems like stretching our interpretation of regression slightly</p>



<a name="134747974"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747974" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747974">(Sep 27 2018 at 14:26)</a>:</h4>
<p>The "ICE is correct" bit is because this is an unimplemented feature</p>



<a name="134747995"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134747995" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134747995">(Sep 27 2018 at 14:26)</a>:</h4>
<p><span class="user-mention" data-user-id="121053">@varkor</span> it might need its own issue since I dont see ICE mentioned in title nor description of <a href="https://github.com/rust-lang/rust/issues/43408" target="_blank" title="https://github.com/rust-lang/rust/issues/43408">#43408</a></p>



<a name="134748004"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748004" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748004">(Sep 27 2018 at 14:26)</a>:</h4>
<p>this is only vaguely error -&gt; ICE, because we stabilized const fn size_of (you needed a feature gate to get the ICE before)</p>



<a name="134748016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748016">(Sep 27 2018 at 14:26)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> <a href="https://github.com/rust-lang/rust/issues/43408" target="_blank" title="https://github.com/rust-lang/rust/issues/43408">#43408</a> is <em>anything</em></p>



<a name="134748018"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748018" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748018">(Sep 27 2018 at 14:27)</a>:</h4>
<blockquote>
<p>the ICE is <a href="https://github.com/rust-lang/rust/issues/43408" target="_blank" title="https://github.com/rust-lang/rust/issues/43408">https://github.com/rust-lang/rust/issues/43408</a></p>
</blockquote>
<p>so, that bug doesn't even look like an ICE?</p>



<a name="134748020"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748020" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748020">(Sep 27 2018 at 14:27)</a>:</h4>
<p>including ICEs</p>



<a name="134748031"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748031" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748031">(Sep 27 2018 at 14:27)</a>:</h4>
<p>it's mentioned in a comment: <a href="https://github.com/rust-lang/rust/issues/43408#issuecomment-391628161" target="_blank" title="https://github.com/rust-lang/rust/issues/43408#issuecomment-391628161">https://github.com/rust-lang/rust/issues/43408#issuecomment-391628161</a></p>



<a name="134748038"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748038" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748038">(Sep 27 2018 at 14:27)</a>:</h4>
<blockquote>
<p>The "ICE is correct" bit is because this is an unimplemented feature</p>
</blockquote>
<p>but a stable one?</p>



<a name="134748042"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748042" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748042">(Sep 27 2018 at 14:27)</a>:</h4>
<p>the compiler cannot support nor properly diagnose</p>



<a name="134748055"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748055" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748055">(Sep 27 2018 at 14:27)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> yuuppp</p>



<a name="134748060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748060">(Sep 27 2018 at 14:27)</a>:</h4>
<p>this is why I keep asking for lazy normalization</p>



<a name="134748091"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748091" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748091">(Sep 27 2018 at 14:28)</a>:</h4>
<p>for time being, can we not die in a nicer way?</p>



<a name="134748151"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748151" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748151">(Sep 27 2018 at 14:28)</a>:</h4>
<p>I'm not sure where to put it without breaking code that <em>does</em> work</p>



<a name="134748193"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748193" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748193">(Sep 27 2018 at 14:28)</a>:</h4>
<p>So it sounds like <span class="user-mention" data-user-id="116009">@nikomatsakis</span> wants <a href="https://github.com/rust-lang/rust/issues/43408" target="_blank" title="https://github.com/rust-lang/rust/issues/43408">#43408</a> to be dedicating to implementing this feature correctly</p>



<a name="134748200"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748200" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748200">(Sep 27 2018 at 14:29)</a>:</h4>
<p>at minimum, maybe we can change the ICE to redirect to a "canonical issue" and cleanup the description :)</p>



<a name="134748210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748210">(Sep 27 2018 at 14:29)</a>:</h4>
<p>to help avoid confusion</p>



<a name="134748212"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748212" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748212">(Sep 27 2018 at 14:29)</a>:</h4>
<p>and thus we may still want some bug dedicated to a controlled exit</p>



<a name="134748232"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748232" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748232">(Sep 27 2018 at 14:29)</a>:</h4>
<p>the ICE is just the compiler dying randomly</p>



<a name="134748233"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748233" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748233">(Sep 27 2018 at 14:29)</a>:</h4>
<p>which could be <a href="https://github.com/rust-lang/rust/issues/54327" target="_blank" title="https://github.com/rust-lang/rust/issues/54327">#54327</a>, or some newly filed issue...</p>



<a name="134748236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748236">(Sep 27 2018 at 14:29)</a>:</h4>
<p>it's not <em>specific</em> to this feature</p>



<a name="134748249"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748249" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748249">(Sep 27 2018 at 14:29)</a>:</h4>
<p>the thing is...</p>



<a name="134748258"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748258" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748258">(Sep 27 2018 at 14:30)</a>:</h4>
<p>ok, well, let's discuss somewhere else I guess.</p>



<a name="134748314"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748314" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748314">(Sep 27 2018 at 14:30)</a>:</h4>
<p>I'd like you to spell out for me how it is that the lack of lazy norm is causing this particular ICE.</p>



<a name="134748346"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748346" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748346">(Sep 27 2018 at 14:30)</a>:</h4>
<p>the lack of lazy norm means we can't do the backwards-compatible fix which is to implement the feature</p>



<a name="134748387"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748387" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748387">(Sep 27 2018 at 14:31)</a>:</h4>
<p>the ICE is just a side-effect-at-a-distance of the feature not being implemented</p>



<a name="134748535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748535">(Sep 27 2018 at 14:32)</a>:</h4>
<p>(but we can/should discuss this later/elsewhere)</p>



<a name="134748587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748587">(Sep 27 2018 at 14:33)</a>:</h4>
<p>next up: "Tracking issue for RFC 2438, "Deny the <code>overflowing_literals</code> lint for the 2018 edition"" <a href="https://github.com/rust-lang/rust/issues/54502" target="_blank" title="https://github.com/rust-lang/rust/issues/54502">#54502</a></p>



<a name="134748695"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748695" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748695">(Sep 27 2018 at 14:34)</a>:</h4>
<p>does anyone know what documentation Centril is referring to / imagining?</p>



<a name="134748723"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748723" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748723">(Sep 27 2018 at 14:35)</a>:</h4>
<p>is it just transcribing the explanation(s?) from the RFC text?</p>



<a name="134748804"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748804" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748804">(Sep 27 2018 at 14:36)</a>:</h4>
<p>Well it sounds easy enough, I suppose. I'll assign it to myself.</p>



<a name="134748824"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748824" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748824">(Sep 27 2018 at 14:36)</a>:</h4>
<p>I imagine something in the Rust 2018 guide?</p>



<a name="134748825"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748825" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748825">(Sep 27 2018 at 14:36)</a>:</h4>
<p>I don't see how it could be documented — the only thing that's changed is the default level</p>



<a name="134748837"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748837" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748837">(Sep 27 2018 at 14:36)</a>:</h4>
<p>I can't see anything in the guide about lint levels</p>



<a name="134748842"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748842" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748842">(Sep 27 2018 at 14:36)</a>:</h4>
<p>I'll ask Centril tonight</p>



<a name="134748844"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748844" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748844">(Sep 27 2018 at 14:36)</a>:</h4>
<p>(if I remember)</p>



<a name="134748867"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748867" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748867">(Sep 27 2018 at 14:37)</a>:</h4>
<p>okay so that's all the P-high issues</p>



<a name="134748872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748872">(Sep 27 2018 at 14:37)</a>:</h4>
<p>lets move on</p>



<a name="134748888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748888">(Sep 27 2018 at 14:37)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta" target="_blank" title="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta">stable to beta regressions</a></p>



<a name="134748897"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748897" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748897">(Sep 27 2018 at 14:37)</a>:</h4>
<p>holy crumb</p>



<a name="134748921"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748921" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748921">(Sep 27 2018 at 14:37)</a>:</h4>
<p>not all T-compiler</p>



<a name="134748969"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748969" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748969">(Sep 27 2018 at 14:38)</a>:</h4>
<p>I'll start from the bottom, skipping issues assigned to non compiler teams</p>



<a name="134748974"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748974" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748974">(Sep 27 2018 at 14:38)</a>:</h4>
<p>(I had a very broad query because people so often use the wrong T- tag)</p>



<a name="134748985"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748985" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748985">(Sep 27 2018 at 14:38)</a>:</h4>
<p>First: "New compiler error in beta: this constant cannot be used, attempted to read undefined bytes" <a href="https://github.com/rust-lang/rust/issues/54387" target="_blank" title="https://github.com/rust-lang/rust/issues/54387">#54387</a></p>



<a name="134748994"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134748994" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134748994">(Sep 27 2018 at 14:38)</a>:</h4>
<p>that sounds like the new check that <span class="user-mention" data-user-id="124288">@Oli</span> added</p>



<a name="134749005"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749005" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749005">(Sep 27 2018 at 14:38)</a>:</h4>
<p>sure looks kind of wrong</p>



<a name="134749011"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749011" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749011">(Sep 27 2018 at 14:39)</a>:</h4>
<p>is <span class="user-mention" data-user-id="120791">@RalfJ</span> here?</p>



<a name="134749023"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749023" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749023">(Sep 27 2018 at 14:39)</a>:</h4>
<p>Hey <span class="user-mention" data-user-id="119009">@eddyb</span> do you think you might have time to look at this?</p>



<a name="134749030"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749030" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749030">(Sep 27 2018 at 14:39)</a>:</h4>
<p>I guess</p>



<a name="134749032"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749032" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749032">(Sep 27 2018 at 14:39)</a>:</h4>
<p>(under assumption that <span class="user-mention" data-user-id="124288">@Oli</span> and <span class="user-mention" data-user-id="120791">@RalfJ</span> are not available to do so)</p>



<a name="134749039"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749039" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749039">(Sep 27 2018 at 14:39)</a>:</h4>
<p>seems like it is failing to consider the "variant"?</p>



<a name="134749049"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749049" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749049">(Sep 27 2018 at 14:39)</a>:</h4>
<p>i'm going to tentatively assign to @eddyb</p>



<a name="134749109"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749109" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749109">(Sep 27 2018 at 14:40)</a>:</h4>
<p>oh, and its P-high, yeah?</p>



<a name="134749125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749125">(Sep 27 2018 at 14:40)</a>:</h4>
<p>seems like it, though we might just disable that layout check at the worst?</p>



<a name="134749143"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749143" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749143">(Sep 27 2018 at 14:40)</a>:</h4>
<p>sure, P-high bugs can have dumb solutions... :)</p>



<a name="134749144"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749144" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749144">(Sep 27 2018 at 14:40)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> is it possible that the "validator" is just looking at all the bits that <em>might</em> be important without knowing if they really <em>are</em>? (Is the relevant information even contained within the <code>Layout</code>?)</p>



<a name="134749161"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749161" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749161">(Sep 27 2018 at 14:41)</a>:</h4>
<p>Okay next up: "[1.30 beta] Macros recursion limit detection changed" <a href="https://github.com/rust-lang/rust/issues/54464" target="_blank" title="https://github.com/rust-lang/rust/issues/54464">#54464</a></p>



<a name="134749166"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749166" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749166">(Sep 27 2018 at 14:41)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> I am looking through the code right now</p>



<a name="134749197"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749197" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749197">(Sep 27 2018 at 14:41)</a>:</h4>
<p>okay I trust <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> 's analysis of <a href="https://github.com/rust-lang/rust/issues/54464" target="_blank" title="https://github.com/rust-lang/rust/issues/54464">#54464</a></p>



<a name="134749244"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749244" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749244">(Sep 27 2018 at 14:42)</a>:</h4>
<p>I've always worried about this happening with the recursion depth</p>



<a name="134749247"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749247" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749247">(Sep 27 2018 at 14:42)</a>:</h4>
<p>shall we just close as a "wontfix" ?</p>



<a name="134749250"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749250" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749250">(Sep 27 2018 at 14:42)</a>:</h4>
<p>I'd like to find a better fix...</p>



<a name="134749256"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749256" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749256">(Sep 27 2018 at 14:42)</a>:</h4>
<p>one can override it locally, right?</p>



<a name="134749259"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749259" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749259">(Sep 27 2018 at 14:42)</a>:</h4>
<p>well</p>



<a name="134749263"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749263" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749263">(Sep 27 2018 at 14:42)</a>:</h4>
<p>you can</p>



<a name="134749269"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749269" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749269">(Sep 27 2018 at 14:42)</a>:</h4>
<p>not for your dependencies but I guess (in this case) you don't care</p>



<a name="134749290"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749290" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749290">(Sep 27 2018 at 14:42)</a>:</h4>
<p>ah it won't apply if I do it in a downstream crate around the module that uses the macro?</p>



<a name="134749302"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749302" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749302">(Sep 27 2018 at 14:43)</a>:</h4>
<p>or I guess that's not even the issue</p>



<a name="134749307"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749307" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749307">(Sep 27 2018 at 14:43)</a>:</h4>
<p>crazy idea: increase default recursion depth by 1</p>



<a name="134749315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749315">(Sep 27 2018 at 14:43)</a>:</h4>
<p>I was considering that :)</p>



<a name="134749318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749318">(Sep 27 2018 at 14:43)</a>:</h4>
<p>#problemsolved</p>



<a name="134749321"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749321" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749321">(Sep 27 2018 at 14:43)</a>:</h4>
<p>(since the upstream crate could be the one invoking the macro, of coursE)</p>



<a name="134749328"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749328" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749328">(Sep 27 2018 at 14:43)</a>:</h4>
<p>or by a factor of 2</p>



<a name="134749331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749331">(Sep 27 2018 at 14:43)</a>:</h4>
<p>I have no problem with changing the default depth</p>



<a name="134749338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749338">(Sep 27 2018 at 14:43)</a>:</h4>
<p>but if our policy is to multiply by 2 every time this happens</p>



<a name="134749340"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749340" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749340">(Sep 27 2018 at 14:43)</a>:</h4>
<p>(it's pretty arbitrary, to be sure)</p>



<a name="134749341"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749341" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749341">(Sep 27 2018 at 14:43)</a>:</h4>
<p>we're going to have a problem</p>



<a name="134749396"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749396" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749396">(Sep 27 2018 at 14:44)</a>:</h4>
<p>also this is not a fix for people with a manually increased depth</p>



<a name="134749408"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749408" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749408">(Sep 27 2018 at 14:44)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> yeah but I dont' see how to reasonably avoid that</p>



<a name="134749439"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749439" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749439">(Sep 27 2018 at 14:45)</a>:</h4>
<p>well</p>



<a name="134749444"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749444" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749444">(Sep 27 2018 at 14:45)</a>:</h4>
<p>that's not true</p>



<a name="134749457"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749457" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749457">(Sep 27 2018 at 14:45)</a>:</h4>
<p>implicitly add 1 to all attributes that set the recursion limit too :P</p>



<a name="134749463"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749463" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749463">(Sep 27 2018 at 14:45)</a>:</h4>
<p>that was what I was about to suggest</p>



<a name="134749467"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749467" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749467">(Sep 27 2018 at 14:45)</a>:</h4>
<p>okay so</p>



<a name="134749476"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749476" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749476">(Sep 27 2018 at 14:45)</a>:</h4>
<p>I really dislike the idea of doing so tho</p>



<a name="134749477"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749477" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749477">(Sep 27 2018 at 14:45)</a>:</h4>
<p>lets maybe not try to decide on the final hack now</p>



<a name="134749484"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749484" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749484">(Sep 27 2018 at 14:45)</a>:</h4>
<p>(nor decide whether we're going to even <em>do</em> such a hack)</p>



<a name="134749490"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749490" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749490">(Sep 27 2018 at 14:45)</a>:</h4>
<p>we could... ignore expansion of compiler macros in the recursion limit?</p>



<a name="134749508"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749508" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749508">(Sep 27 2018 at 14:45)</a>:</h4>
<p>it feels like this is pretty minimal impact</p>



<a name="134749547"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749547" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749547">(Sep 27 2018 at 14:46)</a>:</h4>
<p>Instead: lets just quickly determine: Is this a WONTFIX, or are we going to investigate work-arounds in some manner?</p>



<a name="134749569"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749569" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749569">(Sep 27 2018 at 14:46)</a>:</h4>
<p>I think we should probably carry on discussion on the ticket</p>



<a name="134749572"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749572" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749572">(Sep 27 2018 at 14:46)</a>:</h4>
<p>I'd probably be ok with calling this a WONTFIX for now</p>



<a name="134749584"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749584" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749584">(Sep 27 2018 at 14:46)</a>:</h4>
<p>(unless we all agree with <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> that this is WONTFIX)</p>



<a name="134749612"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749612" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749612">(Sep 27 2018 at 14:47)</a>:</h4>
<p>does <em>anyone</em> feel strongly enough about this being not WONTFIX that they are willing to be assigned the issue?</p>



<a name="134749646"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749646" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749646">(Sep 27 2018 at 14:47)</a>:</h4>
<p>(where assignment here would be not necessarily implementing the solution , but rather driving the discussion )</p>



<a name="134749715"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749715" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749715">(Sep 27 2018 at 14:48)</a>:</h4>
<p>...</p>



<a name="134749724"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749724" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749724">(Sep 27 2018 at 14:48)</a>:</h4>
<p>well I could close it or I can leave it open until next week</p>



<a name="134749735"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749735" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749735">(Sep 27 2018 at 14:49)</a>:</h4>
<p>lets just do that, give people a chance to weigh in; I'll leave a note</p>



<a name="134749870"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749870" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749870">(Sep 27 2018 at 14:50)</a>:</h4>
<p>gotta speed up</p>



<a name="134749884"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749884" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749884">(Sep 27 2018 at 14:51)</a>:</h4>
<p>next up: "[1.30 beta] test attribute on methods cause errors" <a href="https://github.com/rust-lang/rust/issues/54465" target="_blank" title="https://github.com/rust-lang/rust/issues/54465">#54465</a></p>



<a name="134749970"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749970" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749970">(Sep 27 2018 at 14:52)</a>:</h4>
<p>sounds expected</p>



<a name="134749977"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134749977" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134749977">(Sep 27 2018 at 14:52)</a>:</h4>
<p>yep.</p>



<a name="134750008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750008">(Sep 27 2018 at 14:53)</a>:</h4>
<p>so wait</p>



<a name="134750014"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750014" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750014">(Sep 27 2018 at 14:53)</a>:</h4>
<p>is there a separate issue for each instance of this...?</p>



<a name="134750027"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750027" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750027">(Sep 27 2018 at 14:53)</a>:</h4>
<p>uh? nope</p>



<a name="134750084"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750084" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750084">(Sep 27 2018 at 14:54)</a>:</h4>
<p>maybe I opened a few too much, but there should be an issue for each different regression</p>



<a name="134750085"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750085" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750085">(Sep 27 2018 at 14:54)</a>:</h4>
<p>sorry I'm trying to make inferences</p>



<a name="134750092"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750092" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750092">(Sep 27 2018 at 14:54)</a>:</h4>
<p>based on text in descriptions</p>



<a name="134750102"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750102" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750102">(Sep 27 2018 at 14:54)</a>:</h4>
<p>and so I looked at "[1.30 beta] tester crate broken" <a href="https://github.com/rust-lang/rust/issues/54466" target="_blank" title="https://github.com/rust-lang/rust/issues/54466">#54466</a></p>



<a name="134750107"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750107" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750107">(Sep 27 2018 at 14:54)</a>:</h4>
<p>(Since at this speed we ain’t gonna get out off the beta regressions I want to point your attention to a stable-stable one that is probably unsoundness: <a href="https://github.com/rust-lang/rust/issues/54462" target="_blank" title="https://github.com/rust-lang/rust/issues/54462">https://github.com/rust-lang/rust/issues/54462</a>)</p>



<a name="134750121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750121">(Sep 27 2018 at 14:54)</a>:</h4>
<p>and couldn't tell if it was an instance of the same thing as <a href="https://github.com/rust-lang/rust/issues/54465" target="_blank" title="https://github.com/rust-lang/rust/issues/54465">#54465</a></p>



<a name="134750135"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750135" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750135">(Sep 27 2018 at 14:54)</a>:</h4>
<p>nope, this is the crate that's overriding our own libtest</p>



<a name="134750239"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750239" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750239">(Sep 27 2018 at 14:56)</a>:</h4>
<p>ah, sorry, I didn't follow link to the comment</p>



<a name="134750247"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750247" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750247">(Sep 27 2018 at 14:56)</a>:</h4>
<p>(or rather, it didn't load fast enough for me to read it)</p>



<a name="134750297"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750297" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750297">(Sep 27 2018 at 14:57)</a>:</h4>
<p>okay.</p>



<a name="134750302"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750302" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750302">(Sep 27 2018 at 14:57)</a>:</h4>
<p>sounds like another WONTFIX</p>



<a name="134750304"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750304" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750304">(Sep 27 2018 at 14:57)</a>:</h4>
<p>in any case</p>



<a name="134750417"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750417" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750417">(Sep 27 2018 at 14:59)</a>:</h4>
<p>trying to move along</p>



<a name="134750427"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750427" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750427">(Sep 27 2018 at 14:59)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> do you mind if I interrupt the agenda with <a href="https://github.com/rust-lang/rust/issues/54462" target="_blank" title="https://github.com/rust-lang/rust/issues/54462">#54462</a>?</p>



<a name="134750429"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750429" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750429">(Sep 27 2018 at 14:59)</a>:</h4>
<p>though I understand <span class="user-mention" data-user-id="123586">@nagisa</span> wanted some attention padid to the unsoundness issue</p>



<a name="134750445"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750445" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750445">(Sep 27 2018 at 14:59)</a>:</h4>
<p>okay lets discuss</p>



<a name="134750449"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750449" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750449">(Sep 27 2018 at 14:59)</a>:</h4>
<p>(and also if you could check the backports in this meeting it would be awesome!)</p>



<a name="134750453"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750453" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750453">(Sep 27 2018 at 14:59)</a>:</h4>
<p>"Incorrect code generation for nalgebra's Matrix::swap_rows()" <a href="https://github.com/rust-lang/rust/issues/54462" target="_blank" title="https://github.com/rust-lang/rust/issues/54462">#54462</a></p>



<a name="134750506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750506">(Sep 27 2018 at 15:00)</a>:</h4>
<p>I think all we should do is simply flip the noalias attribute back to disabled by default</p>



<a name="134750526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750526">(Sep 27 2018 at 15:00)</a>:</h4>
<p>I can prepare a patch</p>



<a name="134750532"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750532" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750532">(Sep 27 2018 at 15:00)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> Agenda is here: <a href="https://public.etherpad-mozilla.org/p/rust-compiler-meeting" target="_blank" title="https://public.etherpad-mozilla.org/p/rust-compiler-meeting">https://public.etherpad-mozilla.org/p/rust-compiler-meeting</a></p>



<a name="134750537"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750537" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750537">(Sep 27 2018 at 15:00)</a>:</h4>
<p>the question is, do we want to backport to stable?</p>



<a name="134750538"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750538" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750538">(Sep 27 2018 at 15:00)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> we try to get to them</p>



<a name="134750566"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750566" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750566">(Sep 27 2018 at 15:00)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> you have verified that this fixes it?</p>



<a name="134750574"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750574" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750574">(Sep 27 2018 at 15:01)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> you can build with -Zmutable-noalias=no and it runs properly then</p>



<a name="134750587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750587">(Sep 27 2018 at 15:01)</a>:</h4>
<p>curious</p>



<a name="134750593"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750593" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750593">(Sep 27 2018 at 15:01)</a>:</h4>
<p>This flag AFAIU controls specifically that.</p>



<a name="134750596"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750596" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750596">(Sep 27 2018 at 15:01)</a>:</h4>
<p>Wait</p>



<a name="134750597"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750597" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750597">(Sep 27 2018 at 15:01)</a>:</h4>
<p>do you think it's an LLVM bug?</p>



<a name="134750599"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750599" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750599">(Sep 27 2018 at 15:01)</a>:</h4>
<p>ther's not even a PR yet</p>



<a name="134750605"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750605" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750605">(Sep 27 2018 at 15:01)</a>:</h4>
<p>Definitely an LLVM bug.</p>



<a name="134750618"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750618" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750618">(Sep 27 2018 at 15:01)</a>:</h4>
<p>So you want us to discuss ... whether you shoud try to make your code in a manner that is backportable?</p>



<a name="134750632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750632">(Sep 27 2018 at 15:02)</a>:</h4>
<p>(inlining the mem::swap, so no <code>noalias</code> annotations get introduced also fixes it)</p>



<a name="134750668"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750668" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750668">(Sep 27 2018 at 15:02)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I want to know if we are interested in backporting to stable at all</p>



<a name="134750673"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750673" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750673">(Sep 27 2018 at 15:02)</a>:</h4>
<p>yes.</p>



<a name="134750676"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750676" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750676">(Sep 27 2018 at 15:02)</a>:</h4>
<blockquote>
<p>So you want us to discuss ... whether you shoud try to make your code in a manner that is backportable?</p>
</blockquote>
<p>I think the question is, if they make this PR to disable no-alias (which is trivial), would we want to backport it?</p>



<a name="134750693"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750693" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750693">(Sep 27 2018 at 15:02)</a>:</h4>
<blockquote>
<p>Definitely an LLVM bug.</p>
</blockquote>
<p>and/or a misuse of no-alias I suppose</p>



<a name="134750699"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750699" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750699">(Sep 27 2018 at 15:02)</a>:</h4>
<p>though it seems like the annotation is correct here</p>



<a name="134750702"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750702" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750702">(Sep 27 2018 at 15:02)</a>:</h4>
<p>for any possible meaning</p>



<a name="134750704"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750704" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750704">(Sep 27 2018 at 15:02)</a>:</h4>
<p>the price we pay is probably only the loss of whatever performance wins we got by enabling noalias.</p>



<a name="134750705"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750705" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750705">(Sep 27 2018 at 15:02)</a>:</h4>
<p>The patch would be trivial, but the implications might not be, no?</p>



<a name="134750709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750709">(Sep 27 2018 at 15:03)</a>:</h4>
<p>right, the perf issue was wht I was thinking of</p>



<a name="134750711"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750711" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750711">(Sep 27 2018 at 15:03)</a>:</h4>
<p>perf impact</p>



<a name="134750730"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750730" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750730">(Sep 27 2018 at 15:03)</a>:</h4>
<p>when this has come up before, we bit the bullet and did it</p>



<a name="134750732"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750732" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750732">(Sep 27 2018 at 15:03)</a>:</h4>
<p>then re-enabled later once the relevant bug was fixed</p>



<a name="134750740"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750740" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750740">(Sep 27 2018 at 15:03)</a>:</h4>
<p>I can look into fixing the bug on LLVM side as well, but that will take significantly longer</p>



<a name="134750741"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750741" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750741">(Sep 27 2018 at 15:03)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> would you try to minimize something for LLVM?</p>



<a name="134750756"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750756" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750756">(Sep 27 2018 at 15:03)</a>:</h4>
<p>I'd feel  better if they wre tracking it so we had some idea when we could conceivably re-enable</p>



<a name="134750807"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750807" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750807">(Sep 27 2018 at 15:04)</a>:</h4>
<p><span class="user-mention" data-user-id="130111">@Adam Perry</span> <em>has</em> been working on that lolbench stuff</p>



<a name="134750818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750818">(Sep 27 2018 at 15:04)</a>:</h4>
<p>so we could conceivably try to evaluate the perf impact</p>



<a name="134750819"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750819" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750819">(Sep 27 2018 at 15:04)</a>:</h4>
<p>I'm in favor of what <span class="user-mention" data-user-id="116009">@nikomatsakis</span> outlines. In particular, I'm not sure we want <span class="user-mention" data-user-id="123586">@nagisa</span> 's time spent on fixing LLVM itself...</p>



<a name="134750831"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750831" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750831">(Sep 27 2018 at 15:04)</a>:</h4>
<p>(unless we observe serious perf regression, of course)</p>



<a name="134750833"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750833" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750833">(Sep 27 2018 at 15:04)</a>:</h4>
<p>I think the "backport to stable" question is one I can raise at core team mtg</p>



<a name="134750844"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750844" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750844">(Sep 27 2018 at 15:05)</a>:</h4>
<p>typically that's where final call on a stable point release gets made</p>



<a name="134750859"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750859" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750859">(Sep 27 2018 at 15:05)</a>:</h4>
<p>that works for me, just ping me on IRC or here. I’ll most likely have the PR up for master/beta by saturday evening.</p>



<a name="134750864"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750864" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750864">(Sep 27 2018 at 15:05)</a>:</h4>
<p>okay</p>



<a name="134750865"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750865" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750865">(Sep 27 2018 at 15:05)</a>:</h4>
<p>it's unclear how broad this impact is, but I definitely think we should fix for nightly + beta</p>



<a name="134750868"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750868" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750868">(Sep 27 2018 at 15:05)</a>:</h4>
<p>so technically we're out of time</p>



<a name="134750873"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750873" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750873">(Sep 27 2018 at 15:05)</a>:</h4>
<p>but I think we might as well try to get through the list</p>



<a name="134750877"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750877" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750877">(Sep 27 2018 at 15:05)</a>:</h4>
<p>with whomever can stick around</p>



<a name="134750885"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750885" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750885">(Sep 27 2018 at 15:05)</a>:</h4>
<p>and I'll just try to remember we don't necessarily have a quorum ...?</p>



<a name="134750926"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750926" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750926">(Sep 27 2018 at 15:06)</a>:</h4>
<p>seems ok</p>



<a name="134750937"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750937" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750937">(Sep 27 2018 at 15:06)</a>:</h4>
<p>/me will stay for at least half an hour longer</p>



<a name="134750944"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750944" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750944">(Sep 27 2018 at 15:06)</a>:</h4>
<p>so continuing with stable-to-beta regressins</p>



<a name="134750948"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750948" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750948">(Sep 27 2018 at 15:06)</a>:</h4>
<p>next up is: "[1.30 beta] Trait bound is not satisfied" <a href="https://github.com/rust-lang/rust/issues/54467" target="_blank" title="https://github.com/rust-lang/rust/issues/54467">#54467</a></p>



<a name="134750958"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750958" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750958">(Sep 27 2018 at 15:06)</a>:</h4>
<p>ariel's assigned</p>



<a name="134750963"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750963" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750963">(Sep 27 2018 at 15:07)</a>:</h4>
<p>P-high, yeah?</p>



<a name="134750995"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750995" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750995">(Sep 27 2018 at 15:07)</a>:</h4>
<p>P-high; left note.</p>



<a name="134750999"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134750999" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134750999">(Sep 27 2018 at 15:07)</a>:</h4>
<p>I suppose so; we should check in with <span class="user-mention" data-user-id="126804">@Ariel Ben-Yehuda</span>, not sure how much time they have</p>



<a name="134751001"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751001" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751001">(Sep 27 2018 at 15:07)</a>:</h4>
<p>Seems like we can move on, ticket seems to be in right hands.</p>



<a name="134751002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751002">(Sep 27 2018 at 15:07)</a>:</h4>
<p>Next up: "[1.30 beta] Ambiguous macro names" <a href="https://github.com/rust-lang/rust/issues/54472" target="_blank" title="https://github.com/rust-lang/rust/issues/54472">#54472</a></p>



<a name="134751015"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751015" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751015">(Sep 27 2018 at 15:07)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> ariel weighed n on ticket already saying they'd have a fix up</p>



<a name="134751075"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751075" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751075">(Sep 27 2018 at 15:08)</a>:</h4>
<p>appparently PR <a href="https://github.com/rust-lang/rust/issues/54605" target="_blank" title="https://github.com/rust-lang/rust/issues/54605">#54605</a> is a "partial " fix from <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span></p>



<a name="134751100"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751100" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751100">(Sep 27 2018 at 15:09)</a>:</h4>
<p>but hten that PR was tagged as <em>fixing</em> <a href="https://github.com/rust-lang/rust/issues/54472" target="_blank" title="https://github.com/rust-lang/rust/issues/54472">#54472</a></p>



<a name="134751118"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751118" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751118">(Sep 27 2018 at 15:09)</a>:</h4>
<p>anyway seems P-high</p>



<a name="134751123"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751123" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751123">(Sep 27 2018 at 15:09)</a>:</h4>
<p>and assigned.</p>



<a name="134751168"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751168" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751168">(Sep 27 2018 at 15:10)</a>:</h4>
<p>so I'm removing nomination tag and tagging as P-hihg</p>



<a name="134751225"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751225" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751225">(Sep 27 2018 at 15:10)</a>:</h4>
<p>next: "[1.30 beta] Regression and bad diagnostics about macros"  <a href="https://github.com/rust-lang/rust/issues/54473" target="_blank" title="https://github.com/rust-lang/rust/issues/54473">#54473</a></p>



<a name="134751251"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751251" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751251">(Sep 27 2018 at 15:11)</a>:</h4>
<p>I am trying to figure out what <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> 's comment on this means</p>



<a name="134751271"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751271" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751271">(Sep 27 2018 at 15:11)</a>:</h4>
<p>I think they mean that the code was incorrect in the first place?</p>



<a name="134751277"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751277" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751277">(Sep 27 2018 at 15:11)</a>:</h4>
<p>I think it's this expaination <a href="https://github.com/rust-lang/rust/issues/53464#issuecomment-414049821" target="_blank" title="https://github.com/rust-lang/rust/issues/53464#issuecomment-414049821">https://github.com/rust-lang/rust/issues/53464#issuecomment-414049821</a></p>



<a name="134751278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751278">(Sep 27 2018 at 15:11)</a>:</h4>
<p>seems like local_inner_macros is misused by various crates...?</p>



<a name="134751282"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751282" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751282">(Sep 27 2018 at 15:12)</a>:</h4>
<p>and that export_inner_macros was buggy altogether.</p>



<a name="134751367"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751367" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751367">(Sep 27 2018 at 15:13)</a>:</h4>
<p>On August 19, <code>local_inner_macros</code> was in beta but not stable...</p>



<a name="134751388"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751388" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751388">(Sep 27 2018 at 15:13)</a>:</h4>
<p>okay so its sounds like the knowledgable people are all tagging this as a documentation issue .... ?</p>



<a name="134751396"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751396" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751396">(Sep 27 2018 at 15:13)</a>:</h4>
<p>maybe also fixing the diagnostics</p>



<a name="134751448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751448">(Sep 27 2018 at 15:14)</a>:</h4>
<p>makes sense; the attribute is easy to misuse...</p>



<a name="134751450"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751450" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751450">(Sep 27 2018 at 15:14)</a>:</h4>
<p>either way all of that is documented on <a href="https://github.com/rust-lang/rust/issues/53464" target="_blank" title="https://github.com/rust-lang/rust/issues/53464">#53464</a></p>



<a name="134751452"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751452" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751452">(Sep 27 2018 at 15:14)</a>:</h4>
<p>"use <code>extern crate assert_eq;</code>" is not the best message</p>



<a name="134751459"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751459" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751459">(Sep 27 2018 at 15:14)</a>:</h4>
<p>which means that I'm inclined to close <a href="https://github.com/rust-lang/rust/issues/54473" target="_blank" title="https://github.com/rust-lang/rust/issues/54473">#54473</a> as a duplicate of <a href="https://github.com/rust-lang/rust/issues/53464" target="_blank" title="https://github.com/rust-lang/rust/issues/53464">#53464</a></p>



<a name="134751480"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751480" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751480">(Sep 27 2018 at 15:15)</a>:</h4>
<p>the only question is whether T-compiler should be added to the tags on <a href="https://github.com/rust-lang/rust/issues/53464" target="_blank" title="https://github.com/rust-lang/rust/issues/53464">#53464</a>, to track the work of fixing the diagnositcs</p>



<a name="134751493"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751493" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751493">(Sep 27 2018 at 15:15)</a>:</h4>
<p>that, or we open a fresh ticket (or repurpose <a href="https://github.com/rust-lang/rust/issues/54473" target="_blank" title="https://github.com/rust-lang/rust/issues/54473">#54473</a>) for that subtask...</p>



<a name="134751508"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751508" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751508">(Sep 27 2018 at 15:15)</a>:</h4>
<p>I'll leave a note saying this.</p>



<a name="134751613"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751613" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751613">(Sep 27 2018 at 15:16)</a>:</h4>
<p>and add us to tags on <a href="https://github.com/rust-lang/rust/issues/54364" target="_blank" title="https://github.com/rust-lang/rust/issues/54364">#54364</a></p>



<a name="134751622"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751622" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751622">(Sep 27 2018 at 15:16)</a>:</h4>
<p>we can revisit next week what to do about <em>that</em> ticket</p>



<a name="134751653"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751653" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751653">(Sep 27 2018 at 15:17)</a>:</h4>
<p>next: "[1.30 beta] Multiple applicable items in scope" <a href="https://github.com/rust-lang/rust/issues/54474" target="_blank" title="https://github.com/rust-lang/rust/issues/54474">#54474</a></p>



<a name="134751683"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751683" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751683">(Sep 27 2018 at 15:17)</a>:</h4>
<p>that's not T-compiler</p>



<a name="134751752"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751752" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751752">(Sep 27 2018 at 15:18)</a>:</h4>
<p>so it sounds like ... we shoud close as WONTFIX</p>



<a name="134751755"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751755" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751755">(Sep 27 2018 at 15:18)</a>:</h4>
<p>oh good point</p>



<a name="134751763"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751763" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751763">(Sep 27 2018 at 15:18)</a>:</h4>
<p>then i wont touch it</p>



<a name="134751768"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751768" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751768">(Sep 27 2018 at 15:18)</a>:</h4>
<p>next: "[1.30 beta] Test suite of the collection crate is failing" <a href="https://github.com/rust-lang/rust/issues/54477" target="_blank" title="https://github.com/rust-lang/rust/issues/54477">#54477</a></p>



<a name="134751783"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751783" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751783">(Sep 27 2018 at 15:18)</a>:</h4>
<p>well who knows what's up here</p>



<a name="134751792"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751792" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751792">(Sep 27 2018 at 15:19)</a>:</h4>
<p>I'll assign to self to investigate.</p>



<a name="134751817"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751817" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751817">(Sep 27 2018 at 15:19)</a>:</h4>
<p>not going to tag with P- label yet until I have more knoweldgfe of what's up with it though</p>



<a name="134751896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751896">(Sep 27 2018 at 15:20)</a>:</h4>
<p>next: "[1.30 beta] Test suite of the jemalloc-ctl crate is failing" <a href="https://github.com/rust-lang/rust/issues/54478" target="_blank" title="https://github.com/rust-lang/rust/issues/54478">#54478</a></p>



<a name="134751915"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751915" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751915">(Sep 27 2018 at 15:20)</a>:</h4>
<p>I'll likewise assign to myself; I cannot tell how much sfackler  managed to glean from their review</p>



<a name="134751938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751938">(Sep 27 2018 at 15:21)</a>:</h4>
<p>next: "[1.30 beta] More chars considered alphanumeric in 1.30" <a href="https://github.com/rust-lang/rust/issues/54481" target="_blank" title="https://github.com/rust-lang/rust/issues/54481">#54481</a></p>



<a name="134751945"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751945" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751945">(Sep 27 2018 at 15:21)</a>:</h4>
<p>oops, also not us</p>



<a name="134751972"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134751972" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134751972">(Sep 27 2018 at 15:21)</a>:</h4>
<p>okay that's all the stable-to-beta regressins</p>



<a name="134752027"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752027" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752027">(Sep 27 2018 at 15:22)</a>:</h4>
<p>thank <strong>goodness</strong>, stable-to-nightly regressions is <a href="https://github.com/rust-lang/rust/labels/regression-from-stable-to-nightly" target="_blank" title="https://github.com/rust-lang/rust/labels/regression-from-stable-to-nightly">empty</a></p>



<a name="134752041"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752041" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752041">(Sep 27 2018 at 15:22)</a>:</h4>
<p>next up, <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated">beta nominations</a></p>



<a name="134752044"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752044" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752044">(Sep 27 2018 at 15:22)</a>:</h4>
<blockquote>
<p>next: "[1.30 beta] Test suite of the collection crate is failing" <a href="https://github.com/rust-lang/rust/issues/54477" target="_blank" title="https://github.com/rust-lang/rust/issues/54477">#54477</a></p>
</blockquote>
<p>that one is kind of scary</p>



<a name="134752058"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752058" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752058">(Sep 27 2018 at 15:22)</a>:</h4>
<p>first beta-nom: "52985: cause cycle err on inf trait normalization" <a href="https://github.com/rust-lang/rust/issues/53316" target="_blank" title="https://github.com/rust-lang/rust/issues/53316">#53316</a></p>



<a name="134752064"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752064" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752064">(Sep 27 2018 at 15:22)</a>:</h4>
<p>I nominated this</p>



<a name="134752068"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752068" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752068">(Sep 27 2018 at 15:22)</a>:</h4>
<p>just to put it through bureaucracy</p>



<a name="134752083"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752083" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752083">(Sep 27 2018 at 15:23)</a>:</h4>
<p>which I am now regretting at the post 23 minute mark</p>



<a name="134752104"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752104" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752104">(Sep 27 2018 at 15:23)</a>:</h4>
<p>in terms of size, this definitely passes for a beta backport</p>



<a name="134752108"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752108" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752108">(Sep 27 2018 at 15:23)</a>:</h4>
<p>Does anyone here think we should backport?</p>



<a name="134752165"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752165" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752165">(Sep 27 2018 at 15:24)</a>:</h4>
<p>that being said what <code>existential type</code> is even</p>



<a name="134752181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752181">(Sep 27 2018 at 15:24)</a>:</h4>
<p>if it is not stable or stabilised in beta, is there any reason to backport at all?</p>



<a name="134752186"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752186" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752186">(Sep 27 2018 at 15:24)</a>:</h4>
<p>true, that test tells us nothing</p>



<a name="134752188"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752188" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752188">(Sep 27 2018 at 15:24)</a>:</h4>
<p>my <em>hypothesis</em> is that it fixed an impl Trait bug too</p>



<a name="134752201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752201">(Sep 27 2018 at 15:24)</a>:</h4>
<p>they are impl'd in terms of the same underlying mechanisms</p>



<a name="134752208"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752208" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752208">(Sep 27 2018 at 15:25)</a>:</h4>
<p>so that it is not unlikely</p>



<a name="134752209"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752209" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752209">(Sep 27 2018 at 15:25)</a>:</h4>
<p>namely : "infinite recursion ICE" <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a></p>



<a name="134752233"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752233" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752233">(Sep 27 2018 at 15:25)</a>:</h4>
<p>I’m willing to accept on condition that somebody confirms that this fixes that bug <span class="emoji emoji-1f642" title="slight smile">:slight_smile:</span></p>



<a name="134752254"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752254" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752254">(Sep 27 2018 at 15:25)</a>:</h4>
<p>but would we backport to stable too?</p>



<a name="134752260"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752260" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752260">(Sep 27 2018 at 15:25)</a>:</h4>
<p>its a stable-to-stable regression</p>



<a name="134752277"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752277" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752277">(Sep 27 2018 at 15:25)</a>:</h4>
<p>and if we're not going to backport to stable</p>



<a name="134752289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752289">(Sep 27 2018 at 15:25)</a>:</h4>
<p>then I'm not sure we should bother with beta backport</p>



<a name="134752333"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752333" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752333">(Sep 27 2018 at 15:26)</a>:</h4>
<p>that’s for T-core to decide, right? I guess if we’re going to be backporting the noalias fix, then this could be a fairly simple thing to bundle with it</p>



<a name="134752350"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752350" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752350">(Sep 27 2018 at 15:26)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> can you raise this one at the T-core meeting then?</p>



<a name="134752389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752389">(Sep 27 2018 at 15:26)</a>:</h4>
<p>I can</p>



<a name="134752394"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752394" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752394">(Sep 27 2018 at 15:26)</a>:</h4>
<p>(this one seems like a more sizeable backport than the one that <span class="user-mention" data-user-id="123586">@nagisa</span> was hypothesizing for that other bug)</p>



<a name="134752395"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752395" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752395">(Sep 27 2018 at 15:26)</a>:</h4>
<p>Okay</p>



<a name="134752397"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752397" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752397">(Sep 27 2018 at 15:26)</a>:</h4>
<p>but I don't follow this logic of "if we don't backport to stable, why bother"</p>



<a name="134752431"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752431" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752431">(Sep 27 2018 at 15:27)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> because once you have to work around the issue in your stable crate</p>



<a name="134752439"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752439" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752439">(Sep 27 2018 at 15:27)</a>:</h4>
<p>well, with backport to beta, people would get their fix 6 weeks earlier</p>



<a name="134752464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752464">(Sep 27 2018 at 15:28)</a>:</h4>
<p>(again, provided this fixes <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a> at all)</p>



<a name="134752502"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752502" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752502">(Sep 27 2018 at 15:28)</a>:</h4>
<p>to me, the primary purpose of the beta branch is to catch bugs before they hit stable. If we miss that window, then the calculus changes of how to prioritize fixes, especially to things like fixing ICE's</p>



<a name="134752521"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752521" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752521">(Sep 27 2018 at 15:28)</a>:</h4>
<p>(soundness fixes, <em>those</em> I could understand backporting to beta alone)</p>



<a name="134752547"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752547" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752547">(Sep 27 2018 at 15:29)</a>:</h4>
<p>of course if the ICE in question is only an ICE sometimes, and an unsoundness other times, then that would be a different calculation of prioritization</p>



<a name="134752564"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752564" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752564">(Sep 27 2018 at 15:29)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> do we have some kind of listing of what is fixed by <a href="https://github.com/rust-lang/rust/pull/53316" target="_blank" title="https://github.com/rust-lang/rust/pull/53316">https://github.com/rust-lang/rust/pull/53316</a> ?</p>



<a name="134752565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752565">(Sep 27 2018 at 15:29)</a>:</h4>
<p>anyway that's just how <em>I</em> look at the question</p>



<a name="134752597"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752597" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752597">(Sep 27 2018 at 15:29)</a>:</h4>
<p>I can see that logic; I think we tend to backport more lightly to beta though</p>



<a name="134752606"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752606" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752606">(Sep 27 2018 at 15:30)</a>:</h4>
<blockquote>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> do we have some kind of listing of what is fixed by <a href="https://github.com/rust-lang/rust/pull/53316" target="_blank" title="https://github.com/rust-lang/rust/pull/53316">https://github.com/rust-lang/rust/pull/53316</a> ?</p>
</blockquote>
<p>... I linked <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a> in my <a href="https://github.com/rust-lang/rust/pull/53316#issuecomment-424728956" target="_blank" title="https://github.com/rust-lang/rust/pull/53316#issuecomment-424728956">comment</a> ?</p>



<a name="134752635"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752635" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752635">(Sep 27 2018 at 15:30)</a>:</h4>
<p>just to get the fix out earlier</p>



<a name="134752666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752666">(Sep 27 2018 at 15:30)</a>:</h4>
<p>ok, <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a> doesn't mention any crates or anything though</p>



<a name="134752677"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752677" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752677">(Sep 27 2018 at 15:30)</a>:</h4>
<p>oh, you mean like real code?</p>



<a name="134752684"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752684" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752684">(Sep 27 2018 at 15:31)</a>:</h4>
<p>its one of those things where I don't think we'd ever see the real code it fixes.</p>



<a name="134752703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752703">(Sep 27 2018 at 15:31)</a>:</h4>
<p>but maybe I'm underestimating how often people write code that infinitely recurses in this manner</p>



<a name="134752709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752709">(Sep 27 2018 at 15:31)</a>:</h4>
<p>/me repeats that they wouldn’t mind a beta backport provided this actually fixes <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a></p>



<a name="134752727"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752727" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752727">(Sep 27 2018 at 15:31)</a>:</h4>
<p>Okay so <span class="user-mention" data-user-id="123586">@nagisa</span> voted in favor</p>



<a name="134752783"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752783" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752783">(Sep 27 2018 at 15:32)</a>:</h4>
<p>I'll assign to myself to make a backport and verify that it fixes <a href="https://github.com/rust-lang/rust/issues/52701" target="_blank" title="https://github.com/rust-lang/rust/issues/52701">#52701</a></p>



<a name="134752793"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752793" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752793">(Sep 27 2018 at 15:32)</a>:</h4>
<p>I'd..probably be ok with beta either way. I hadn't seen that patch before but I can't <em>immediately</em> see the harm. But I also don't hear a lot of strong demand.</p>



<a name="134752806"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752806" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752806">(Sep 27 2018 at 15:32)</a>:</h4>
<p>It's sort of mildly scary :)</p>



<a name="134752818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752818">(Sep 27 2018 at 15:32)</a>:</h4>
<p>in that it goes from Bug to .. not Bug.</p>



<a name="134752835"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752835" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752835">(Sep 27 2018 at 15:32)</a>:</h4>
<p>/me ponders if it is correct</p>



<a name="134752861"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752861" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752861">(Sep 27 2018 at 15:33)</a>:</h4>
<p>in particular I'm unconvinced that returning <code>NoSolution</code> is right</p>



<a name="134752870"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752870" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752870">(Sep 27 2018 at 15:33)</a>:</h4>
<p>though it might be</p>



<a name="134752872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752872">(Sep 27 2018 at 15:33)</a>:</h4>
<p>My assumption was it would diverge at runtime ... ?</p>



<a name="134752873"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752873" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752873">(Sep 27 2018 at 15:33)</a>:</h4>
<p>anyway</p>



<a name="134752886"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752886" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752886">(Sep 27 2018 at 15:33)</a>:</h4>
<p>I guess I don't know what it does yet. :)</p>



<a name="134752944"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752944" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752944">(Sep 27 2018 at 15:34)</a>:</h4>
<p>well, I guess only on <code>Reveal::All</code>...</p>



<a name="134752949"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752949" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752949">(Sep 27 2018 at 15:34)</a>:</h4>
<p>wait, it still fails to compile</p>



<a name="134752962"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134752962" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134752962">(Sep 27 2018 at 15:34)</a>:</h4>
<p>where is the "Not bug" you refer to ?</p>



<a name="134753002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753002">(Sep 27 2018 at 15:34)</a>:</h4>
<p>this example does</p>



<a name="134753006"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753006" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753006">(Sep 27 2018 at 15:35)</a>:</h4>
<p>but other examples might not</p>



<a name="134753020"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753020" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753020">(Sep 27 2018 at 15:35)</a>:</h4>
<p>they are propagating an error out, the caller could do anything</p>



<a name="134753023"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753023" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753023">(Sep 27 2018 at 15:35)</a>:</h4>
<p>okay</p>



<a name="134753026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753026">(Sep 27 2018 at 15:35)</a>:</h4>
<p>I'll look later</p>



<a name="134753032"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753032" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753032">(Sep 27 2018 at 15:35)</a>:</h4>
<p>also, I feel like this is getting reported at the wrong time</p>



<a name="134753037"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753037" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753037">(Sep 27 2018 at 15:35)</a>:</h4>
<p>I'll break out a thread</p>



<a name="134753062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753062">(Sep 27 2018 at 15:35)</a>:</h4>
<p>we have four other beta-nominated</p>



<a name="134753081"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753081" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753081">(Sep 27 2018 at 15:36)</a>:</h4>
<p>but I don't think I nor <span class="user-mention" data-user-id="123586">@nagisa</span> can continue talking right now</p>



<a name="134753164"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753164" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753164">(Sep 27 2018 at 15:36)</a>:</h4>
<p>should I fire off asynchronous approvals?</p>



<a name="134753175"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753175" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753175">(Sep 27 2018 at 15:36)</a>:</h4>
<p>I feel like that protocol did not work out last time (or at least, I got the impression that <span class="user-mention" data-user-id="116009">@nikomatsakis</span> said it was not what we do typically)</p>



<a name="134753192"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753192" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753192">(Sep 27 2018 at 15:36)</a>:</h4>
<p>but I don't know what else to do besides wait until next week again</p>



<a name="134753200"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753200" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753200">(Sep 27 2018 at 15:37)</a>:</h4>
<p>two of those are simple beta regression fixes</p>



<a name="134753207"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753207" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753207">(Sep 27 2018 at 15:37)</a>:</h4>
<p>usually I just go and make unilaterial decisions when this happens :)</p>



<a name="134753208"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753208" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753208">(Sep 27 2018 at 15:37)</a>:</h4>
<p>We have a fair amount of time before the next release. No need to hurry I think.</p>



<a name="134753212"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753212" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753212">(Sep 27 2018 at 15:37)</a>:</h4>
<p>basically trying to clear out the "simple stuff"</p>



<a name="134753214"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753214" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753214">(Sep 27 2018 at 15:37)</a>:</h4>
<p>okay fine, I guess we'll just go through the list next week</p>



<a name="134753289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753289">(Sep 27 2018 at 15:38)</a>:</h4>
<p>(unilateral decisions do not feel right to <span class="user-mention" data-user-id="116083">@pnkfelix</span>  for these matters, except in really obvious cases perhaps ...)</p>



<a name="134753318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753318">(Sep 27 2018 at 15:38)</a>:</h4>
<p>There are also some I-nominated issues</p>



<a name="134753335"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753335" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753335">(Sep 27 2018 at 15:39)</a>:</h4>
<p>but I think we're just going o have to leave those for next week</p>



<a name="134753337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753337">(Sep 27 2018 at 15:39)</a>:</h4>
<p>seems like we won't get to them</p>



<a name="134753358"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753358" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753358">(Sep 27 2018 at 15:39)</a>:</h4>
<p>I gotta run too</p>



<a name="134753364"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753364" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753364">(Sep 27 2018 at 15:39)</a>:</h4>
<p>I guess if everyone in <span class="user-group-mention" data-user-group-id="492">@T-compiler</span> could asynchronously skim over the <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen%20label%3AT-compiler%20label%3AI-nominated%20" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen%20label%3AT-compiler%20label%3AI-nominated%20">I-nominated</a> issues</p>



<a name="134753379"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753379" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753379">(Sep 27 2018 at 15:39)</a>:</h4>
<p>and if you see something that picques your interest, leave a comment about it</p>



<a name="134753428"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753428" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753428">(Sep 27 2018 at 15:40)</a>:</h4>
<p>then that would allow us to make some semblance of progress asyncrhonously...</p>



<a name="134753464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753464">(Sep 27 2018 at 15:40)</a>:</h4>
<p>Okay, thanks everyone for joining!</p>



<a name="134753467"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134753467" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134753467">(Sep 27 2018 at 15:40)</a>:</h4>
<p><span class="emoji emoji-1f44b" title="wave">:wave:</span></p>



<a name="134758557"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134758557" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> anp <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134758557">(Sep 27 2018 at 16:55)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> i don't yet have an easy way to do a trail run but I'd be happy for an opportunity to spike it out. right now I'm working on reducing a bunch of regressions from the backlog though</p>



<a name="134758587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134758587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> anp <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134758587">(Sep 27 2018 at 16:55)</a>:</h4>
<p>and I don't know zulip well enough to set up the appropriate area to discuss, but I'm here and will receive pings properly now :)</p>



<a name="134922568"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202018-09-27/near/134922568" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> RalfJ <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202018-09-27.html#134922568">(Sep 30 2018 at 13:11)</a>:</h4>
<blockquote>
<p>First: "New compiler error in beta: this constant cannot be used, attempted to read undefined bytes" <a href="https://github.com/rust-lang/rust/issues/54387" target="_blank" title="https://github.com/rust-lang/rust/issues/54387">#54387</a></p>
</blockquote>
<p>Fix submitted as <a href="https://github.com/rust-lang/rust/pull/54693" target="_blank" title="https://github.com/rust-lang/rust/pull/54693">https://github.com/rust-lang/rust/pull/54693</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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